mixin Runner{
  void running(){
    print("running");
  }
}


mixin Swimmer{

  void swimming(){
    print("swimming");
  }
}

/**
 * Mixin 混入
 */
class Person with Runner,Swimmer{

}

enum Colors{
  red,green,blue
}

main(){
 final p1 =  new Person();
 p1.swimming();
 p1.running();
}